Get path to assets file in iOS: NSBundle is missing

I am trying to get the path to a file I have in the `Assets.xcassets` directory for my iOS app, but I am not able to. It seems like I should use `NSBundle.mainBundle()` somehow, but Xcode cannot find `NSBundle` even though I import Foundation or UIKit. If I do auto completion on "NSBundle" I get the following options: ``` NSBundleErrorMaximum NSBundleErrorMinimum NSBundleResourceRequest NSBundleExecutableArchitecturePPC NSBundleExecutableArchitectureI386 NSBundleExecutableArchitecturePPC64 NSBundleExecutableArchitectureX86_64 NSBundleOnDemandResourceInvalidTagError ``` I have no clue what these are for. So my questions are: - How can I import `NSBundle` into my project? - How can I get the path to the following file: `Assets.xcassets/Database.dataset/database.txt`? Note that I am able to get the contents of the file doing the following, but I want the path to the file. ``` fileprivate static func readDatabaseFileFromAssets() -> NSDictionary { let databaseAsset = NSDataAsset(name: "Database", bundle: Bundle.main) let json = try? JSONSerialization.jsonObject(with: databaseAsset!.data, options: JSONSerialization.ReadingOptions.allowFragments) return json as! NSDictionary } ```